Curve identification and car height adjusting method for electronic-controlled air suspension (ECAS) system

Abstract

The invention discloses a curve identification and car height adjusting method for an electronic-controlled air suspension (ECAS) system. The curve identification and car height adjusting method comprises the steps that real-time road information of a curve, where a car is about to go into, in front of the car is obtained through a camera, images are subjected to morphological filtering and region-of-interest dividing treatment, and road traffic signs and lane line information are extracted; the road traffic signs are processed through a method based on RGB color space processing and Canny edge operators, grayscale conversion, threshold segmentation and a Bezier curve model are used for three times of fitting to process a lane line, curve model data are obtained, and model data accuracy isimproved through dynamic detection; and finally, the safety car height for curve passing is calculated through the curve model data to serve as the target height, a height adjusting signal is outputto the ECAS system through the car height adjusting method, and thus the car is adjusted to the safety car height before curve passing. Compared with the prior art, the curve identification and car height adjusting method has the characteristics of high identification accuracy and scene pertinence, and travelling safety during curve passing of the car is ensured.

Description

technical field [0001] The invention belongs to the technical field of vehicle electronic control, and in particular relates to a curve identification and vehicle height adjustment method used in an ECAS system. Background technique [0002] Under different driving conditions, the vehicle has different control requirements for the height of the vehicle body, which is particularly important when turning. In different curves, adjusting the appropriate body height can reduce the probability of vehicle rollover. For example, when turning right on a flat road, the electronic-controlled air suspension system (ECAS) can be used to make the vehicle's left side It is slightly higher than the right side, so as to offset the influence of centrifugal force and enhance the safety of cornering at the same speed. [0003] Most of the existing methods use image feature-based recognition and model-based recognition and detection, but the former is not very friendly to curves, and the latter...

AI Technical Summary

Problems solved by technology

[0003] Most of the existing methods use image feature-based recognition and model-based recognition and detection, but the former is not very friendly to curves, and the latter faces the challenge that the network model is too complex to exceed the computing power of the car hardware. In addition, the existing ECAS system control methods are not combined with specific scenarios, so it is necessary to study methods for ECAS system curve recognition and vehicle height adjustment

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